#define _CRT_SECURE_NO_WARNINGS 1
#include <iostream>
#include <utility>

int main() {
    std::pair<int, int> p1(1, 2);
    std::pair<int, int> p2(1, 3);
    std::pair<int, int> p3(2, 1);

    //std::cout << std::boolalpha;
    std::cout << "p1 < p2: " << (p1 < p2) << std::endl;
    std::cout << "p1 < p3: " << (p1 < p3) << std::endl;
    return 0;
}